The router alert option has a rather more drastic effect than simply
having a h-b-h extension header. The intention of the h-b-h header (as
has been discussed recently in connection with a proposed QoS related
option) is that h-b-h options should, by default, not need to be
diverted to the
Excellent. Thanks for the insight.
One comment - you did mention an empty h-b-h header. I would
not expect to see an empty one - right - only if I have options
would I attach the extension header to carry them.
Spence
-Original Message-
From: Elwyn Davies [mailto:[EMAIL PROTECTED]
I would reword that slightly. Melinda Shoer has been known to suggest
that RSVP might be used as a firewall traversal mechanism, implying
that a NAT/Firewall might be interested in the protocol even though
it is middleware more than router.
It does mean, however, if you receive this
Hello;
If the H-B-H
extension header means "all intermediate nodes must look in here for options to
process", why is the "Router Alert" option needed? As I read the text of
the two RFCs, the Router Alert Option is redundant - just including a H-B-H
header means "intermediate nodes must
one of them sounds like it is redundant. I think the Router Alert predated the HBH header...On Nov 1, 2005, at 6:04 PM, John Spence wrote: Hello; If the H-B-H extension header means "all intermediate nodes must look in here for options to process", why is the "Router Alert" option needed? As I
Fred Baker wrote:
one of them sounds like it is redundant. I think the Router Alert
predated the HBH header...
On Nov 1, 2005, at 6:04 PM, John Spence wrote:
Hello;
If the H-B-H extension header means all intermediate nodes must look
in here for options to process, why is the Router Alert
Sorry - that fired too fast.
RFC 2711 also references RFC 2460, so it was built for the H-B-H
extension header. Also, if you look at RFC 3810 (MLDv2), it also
references the Router Alert Option and says:
All MLDv2 messages described in this document MUST be sent with a
link-local IPv6 Source
more like something you turn on - by configuring the protocol that
uses it.
On Nov 1, 2005, at 7:01 PM, vijay gill wrote:
Fred Baker wrote:
one of them sounds like it is redundant. I think the Router Alert
predated the HBH header...
On Nov 1, 2005, at 6:04 PM, John Spence wrote:
Hello;
